fw_engprod_tools: dir structure

Give each utility a directory, to avoid having two mains in one package.

BUG=b:146898912
TEST=ran go install on fw_lab_triage_helper.go and on
fw_e2e_coverage_summarizer.go (and inspected the
bin dir for output).

Change-Id: Idd908f44a0d04138c74e7be837632447c8b00432
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crostestutils/+/1984055
Tested-by: Kevin Shelton <kmshelton@chromium.org>
Reviewed-by: Greg Edelston <gredelston@google.com>
Commit-Queue: Kevin Shelton <kmshelton@chromium.org>
diff --git a/go/src/firmware/fw_e2e_coverage_summarizer.go b/go/src/firmware/e2e_coverage_summarizer/fw_e2e_coverage_summarizer.go
similarity index 100%
rename from go/src/firmware/fw_e2e_coverage_summarizer.go
rename to go/src/firmware/e2e_coverage_summarizer/fw_e2e_coverage_summarizer.go
diff --git a/go/src/firmware/fw_lab_triage_helper.go b/go/src/firmware/lab_triage_helper/fw_lab_triage_helper.go
similarity index 100%
rename from go/src/firmware/fw_lab_triage_helper.go
rename to go/src/firmware/lab_triage_helper/fw_lab_triage_helper.go